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public interface AdaptiveFeatureGenerator
An interface for generating features for name entity identification and for updating document level contexts.
Most implementors do not need the adaptive functionality of this
interface, they should extend the FeatureGeneratorAdapter
class instead.
Note:
Feature generation is not thread safe and a instance of a feature generator
must only be called from one thread. The resources used by a feature
generator are typically shared between man instances of features generators
which are called from many threads and have to be thread safe.
If that is not possible the FeatureGeneratorFactory
must make a copy
of the resource object for each feature generator instance.
FeatureGeneratorAdapter
,
FeatureGeneratorFactory
Method Summary | |
---|---|
void |
clearAdaptiveData()
Informs the feature generator that the context of the adaptive data (typically a document) is no longer valid. |
void |
createFeatures(List<String> features,
String[] tokens,
int index,
String[] previousOutcomes)
Adds the appropriate features for the token at the specified index with the specified array of previous outcomes to the specified list of features. |
void |
updateAdaptiveData(String[] tokens,
String[] outcomes)
Informs the feature generator that the specified tokens have been classified with the corresponding set of specified outcomes. |
Method Detail |
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void createFeatures(List<String> features, String[] tokens, int index, String[] previousOutcomes)
features
- The list of features to be added to.tokens
- The tokens of the sentence or other text unit being processed.index
- The index of the token which is currently being processed.previousOutcomes
- The outcomes for the tokens prior to the specified index.void updateAdaptiveData(String[] tokens, String[] outcomes)
tokens
- The tokens of the sentence or other text unit which has been processed.outcomes
- The outcomes associated with the specified tokens.void clearAdaptiveData()
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